More isn't always better: Too much calcium has risks. Dietary calcium is generally safe, but more isn't necessarily better, and excessive calcium doesn't provide extra bone protection. If you take calcium supplements and eat calcium-fortified foods, you may be getting more calcium than you realize.
Genetic Recombination in Bacteria. This is a process where genetic materials, contained in two separate genomes, are brought together within one unit. In bacteria the recombination takes place by (1) transformation, (2) transduction and (3) conjugation.
Steps in producing recombinant DNA. 1  The required gene is cut from a DNA molecule using a restriction enzyme. 2  A bacterial plasmid is isolated and cut with the same restriction enzyme. 3  The required gene is joined to the plasmid using the enzyme DNA ligase in a process called ligation.